Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f74711e3c0becae…

MALICIOUS

PDF

64.0 KB Created: 2021-09-23 06:09:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 0cb589bcf7ae115c0ae7d75521161094 SHA-1: 470f4bf3aab3c258e39ec314397bd330efd03d60 SHA-256: 9f74711e3c0becae1d97175682a134f48d35cfe589b2b2b265ecb3c198e13794
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample contains embedded JavaScript and a significant number of external URIs, many of which are hosted on disposable domains or compromised CMS uploads. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a malicious intent, likely to lure users to phishing sites or download further malware. The embedded JavaScript is a common technique for initiating malicious actions within PDF documents.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4986

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://bayzones.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/texomasokevojedunirunawed.pdf
    • http://chiari-web.com/ckfinder/optimist/files/86002562491.pdf
    • https://dragonexpressml.com/userfiles/files/27287389623.pdf
    • http://hennel.hu/sources/elemek/file/fagegitokutodipoget.pdf
    • http://www.elmundodelapiscina.com/ckfinder/userfiles/files/sanutodawamusewin.pdf
    • https://menu2uplus.com/images/file/20512261010.pdf
    • http://xn--j1aii.su/userfiles/file/29784842815.pdf
    • http://red-persimmons.com/upfiles/editor/files/17110483664.pdf
    • https://ooo-kenk.ru/userfiles/file/damerimapipubogovoxezi.pdf
    • http://jatechkj.pl/upload/fck/file/16963782336.pdf
    • http://lawfirm.vn/MINH/user_files/file/82044320976.pdf
    • http://vecsecity.info/editor_up/rororabisovuwisagigaza.pdf
    • https://rainbowfurnitures.com/files/files/31763573745.pdf
    • http://form4concrete.ru/pics/cont/file/71684576786.pdf
    • http://pillshop.ru/uimg/files/daxegemuk.pdf
    • http://www.lbtfilm.com/uploads/files/66621202515.pdf
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/16147de5980ca3---53700503139.pdf
    • https://konferencii.ru/js/ckfinder/userfiles/files/81134718831.pdf
    • http://bigbazar.cz/is/images/FCKeditor/File/nofawabadufugo.pdf
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/161426cf8beee9---robuvegujulepuzog.pdf
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135ab9c5bd7f.pdf
    • http://faizleathergloves.com/userfiles/files/zovun.pdf
    • https://pharmnet.cz/ckfiles/files/files/94522868027.pdf
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/1612f8e02082d1---90860320716.pdf
    • http://monteconsultants.com/image/upload/File/gisawetajejupujoreb.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=how+to+share+wifi+password+android+to+pc

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